A378599 Numbers whose divisors can be partitioned into two disjoint sets with the same sum in an odd number of ways.

6, 12, 20, 24, 28, 30, 48, 56, 60, 70, 80, 88, 90, 96, 104, 140, 156, 168, 176, 180, 192, 208, 210, 216, 224, 234, 252, 270, 272, 280, 300, 304, 312, 320, 336, 350, 352, 360, 368, 384, 396, 408, 420, 432, 448, 464, 468, 476, 480, 496, 504, 532, 550, 552, 560, 612, 630, 644, 650, 696, 700, 720, 728, 736, 760, 768

Offset

1,1

Comments

{k such that A083206(k) is odd}.

Links

Antti Karttunen, Table of n, a(n) for n = 1..13313

Prog

(PARI) is_A378599 = A378598;

Crossrefs

Cf. A083206, A083209 (subsequence), A378598 (characteristic function).

Subsequence of A083207, Zumkeller numbers.

Sequence in context: A246198 A083207 A378541 * A370205 A396381 A304391

Adjacent sequences: A378596 A378597 A378598 * A378600 A378601 A378602

Keyword

nonn

Author

Antti Karttunen, Dec 03 2024

Status

approved